Subtract 21/14 from 4/15, Solve 4/15

Subtract 21/14 from 4/15

1^st number: 4/15, 2^nd number: 1 7/14

4/15 - 21/14 is -37/30.

Find the least common denominator or LCM of the two denominators:
LCM of 15 and 14 is 210

Next, find the equivalent fraction of both fractional numbers with denominator 210
For the 1st fraction, since 15 × 14 = 210,
4/15 = 4 × 14/15 × 14 = 56/210
Likewise, for the 2nd fraction, since 14 × 15 = 210,
21/14 = 21 × 15/14 × 15 = 315/210
Subtract the two like fractions:
56/210 - 315/210 = 56 - 315/210 = -259/210
After reducing the fraction, the answer is -37/30

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